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Environmental Influences on Children's Physical Activity: Quantitative Estimates Using a Twin Design
Fisher A,
van Jaarsveld CHM,
Llewellyn CH,
Wardle J
(2010)
Environmental Influences on Children's Physical Activity: Quantitative Estimates Using a Twin Design.
PLOS ONE 5(4): e10110.
https://doi.org/10.1371/journal.pone.0010110